Energy Management

Energy efficiensy in Buildings:

The overall objective of our services is to reduce energy consumption in new and old commercial buildings. Furthermore, our aims at building capacities and knowledge of builders, architects, engineers, research and development laboratories and others, in the area of building energy efficiency.

Building Energy Management System (BEMS)

BEMS Software runs in association with WebAccess HMI & SCADA software. This is a software product requiring users to install appropriate energy monitoring hardware (such as electric kilowatt-hour meters, gas flow meters , etc) that can be connected to IO or automation hardware. These sensors are then read by the WebAccess HMI & SCADA software which in turn makes this data available to the BEMS software.

The BEMS software creates a set of ODBC databases (MS Access is the default) independent of the WebAccess HMI & SCADA databases.

The BEMS software creates a set of pre-formatted charts and reports commonly used in Energy Analysis of Buildings and Facilities.

PROVEN ENERGY-SAVING MEASURES

An energy audit is the starting point and most powerful tool we have in creating effective energy-efficiency solutions. Technology, however, has vastly improved the ability of energy engineers to collect and analyze data. There are areas in which energy-efficiency improvements are likely to be found in existing buildings, including:

Lighting
Lighting typically accounts for 30 percent of energy use in non-residential buildings. A lighting retrofit, including the use of higher-efficiency ballasts and/or lamps, can directly reduce the energy used for lighting and indirectly reduce the demand for air-conditioning.

Demand-response controls
Especially in capacity-constrained areas, it is critical to evaluate utility-rate structures and have the ability to reduce building electrical demand by turning off equipment or systems for defined periods of time. For example, with Internet Protocol-addressable ballasts, lighting could be reduced by 50 percent in selected areas during bright daylight hours.

Premium-efficiency motors
Installing new high-efficiency motors on pumps, fans, and other components can yield substantial energy savings with a relatively short payback, as well as increase reliability and reduce maintenance.

Chilled- and condenser-water temperature
Chillers typically spend less than 1 percent of their operating hours at design conditions; the other 99-plus percent are spent at off-design conditions coinciding with milder outdoor temperatures and/or lower humidity levels. Taking full advantage of these conditions is one way to reduce energy consumption.

Variable-speed drives (VSDs)
VSDs continuously and precisely match motor speed to the demand on a motor. With a large-tonnage chiller system, a VSD retrofit can reduce annual energy consumption by 30 percent.

Outdated-equipment replacement
Dramatic efficiency gains have been made in all categories of HVAC equipment. In many cases, other energy-efficiency measures (e.g., new lighting systems) or changes in building-use patterns have reduced cooling or heating load, meaning new equipment can be smaller in capacity (or staged to meet demand more efficiently).

Variable air volume (VAV)
Constant-volume air distribution, especially at high static pressure, is a known energy waster. Converting to a VAV system, whether overhead or underfloor, can reduce energy consumption by more closely matching airflow to temperature set points at, in many cases, lower static pressure.